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Re: st: Drop observations with multiple zero values


From   Sergiy Radyakin <serjradyakin@gmail.com>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   Re: st: Drop observations with multiple zero values
Date   Fri, 7 Jun 2013 16:13:11 -0400

see the other post then for negatives

On Fri, Jun 7, 2013 at 4:10 PM, G. Anderson <ga274@cam.ac.uk> wrote:
> Thanks a lot Sergiy
>
> This is helpful, although some of the variables do contain negatives
> unfortunately!
>
>
>
> On Jun 7 2013, Sergiy Radyakin wrote:
>
>> tempvar r
>> egen `r'=rowtotal(A B C)
>> drop if `r'==0
>>
>> missings are treated as zeroes and things get more complicated if any
>> of the vars may contain negatives.
>> Best, Sergiy
>>
>> On Fri, Jun 7, 2013 at 4:02 PM, G. Anderson <ga274@cam.ac.uk> wrote:
>>>
>>> Hi,
>>>
>>> Does anybody know how I can drop observations if a number of values are
>>> zero?
>>>
>>> I can do this by manually inputting
>>> drop if( A==0 & B==0 & C==0)
>>> But I was wondering if there was any easier way of doing this (especially
>>> when I have a lot of variables)- perhaps using varlist somehow?
>>>
>>>
>>> Many Thanks,
>>>
>>> Gareth *
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